1. SWEET-POTATO FILLING
1.Preheat the oven to 325 degrees.
2. If using fresh sweet potatoes, peel, cover with water in a saucepan, bring to a boil and then boil gently about 15 minutes, or until tender. Drain well and allow to cool before mashing.
3.In a large bowl, combine mashed sweet potatoes, brown sugar, egg, cream, granulated sugar, vanilla and the spices.
2. PECAN TOPPING
In another bowl, stir together corn syrup, granulated sugar, eggs, vanilla, butter, salt and cinnamon; stir until the mixture forms a slightly opaque syrup, about a minute. Then stir in the pecans.
3. ASSEMBLY
1. Line a deep 9-inch pie plate with pie dough.
2. Spoon in the sweet-potato filling evenly.
3. Pour the pecan syrup on top and bake for 1 1/2 to 1 3/4 hours.